Bobbin-stripping machine.



J. D. SHARPLES 6: T'. CROWE.

BOBBIN STRXPPING MACHINE.

APPLICATION FILED NOV. 11. 1917.

l gg Patented Dec. 31, 1918.

2 SHEETS-SHEET l.

J. D. SHARPLES & T. CROWE.

BOBBIN STRIPPING MACHINE.

APPLlCATlON FILED NOV. 11. 1911.

Patel lted Dec. 31, 1918.

2 SHEETSSHEET 2.

:51: um mus m. Pnamumu. nmmcmn. :1

JOHN D. SHARPLES AND THOMAS CROWE, OF TAFTVILLE, CONNECTICUT, ASSIGNORS TO OLD COLONY MACHINE COMPANY, OF NEW BEDFORD, MASSACHUSETTS, A CORPORA- TION OF MASSACHUSETTS.

BOBBIN-STRIPPING MACHINE.

Specification of Letters Patent.

Patented Dec. 31, 1918.

Application filed November 17, 1917. Serial No. 202,454.

To all whom it may concern:

Be it known that we, J OHN D. SHARPLES and THOMAS CRown, citizens of the United States, and both residents of Taftvllle, county of New London, and State of Connecticut, have jointly invented new and useful Improvements in Bobbin-Stripping Machines, of which the following is a specification, reference being had to the accompanying drawings, forming part thereof.

This invention has reference to improvements in machines for feeding forward bobbins having tail ends or unused portions of roving or yarn and for cutting or stripping said tail ends or unused portions of rovings or yarns from said bobbins without injuring the bobbins.

One object of the invention is to so con struct a machine of this nature that the heads of the bobbins may be positively guided out of contact with the yarn cutting devices while the shafts of the bobbins may have intimate contact withthe members of the cutting devices.

Another object of the invention is to improve the devices wherebythe roving or yarn is cut from the shafts of the bobbins.

relation to a bobbin and in the act of engaging the roving or yarn on the bobbin.

Fig. 5, represents a vertical sectional view of parts of the machine as taken on line 5-5 Fig. 3.

Fig. 6, represents a cross sectional view of the, same as taken on line 66 Fig. 5.

. Fig. 7, represents a sectional view of parts of the same as taken on line 7'-7 Fig. 5 and illustrating a modified construction of the yarn cutting devices.

' Fig. 8, represents a plan view of one of the cutter elements.

Similar characters of reference designate corresponding parts throughout.

The subject matter of the present invention refers to an improvement in bobbin stripping machines of the general nature described in the U. S. Patent No. 1,119,993, granted to the undersigned December 8,1914.

As shown in the drawings in its preferred form the machine frame comprises the longitudinal members 8, 8 spaced apart and sup ported on the standards 9 9 having the cross member 10. Said standards 9, 9 are provided with bearings for the pulleys 11, 11 carrying the belt or apron 12 which has at one side the blocks or cross members 13, 13. One of said belt pulleys has a driving pulley 14 which is driven by the belt 15 from the pulley 16 having a shaft journaled in bearings carried by the cross member 10, which shaft has a smaller pulley 17 driven by the belt 18 from the pulley 19 of shaft 20, which shaft has also the belt pulleys 21 and 22 respectively carrying belts 23 and 24.

Belt 12 is located somewhat below the top of the longitudinal members 8 thereby providing a trough of which the members 8 constitute the side walls and the belt 12, the traveling bottom of the trough in which bobbins to be operated on are received in any suitable manner.

In bearings carried by the frame members 8, 8 is journaled the shaft 25 which has the pulley 26 driven by the belt 23 and the rotary cutter device indicated as a whole at 27 This cutter device may comprise one or more but preferably two disks 28, 28 formed in part with or securely fixed to a hub and hav ing at their peripheries series of yarn en gaging and cutting implements which have the points 30, 30, the inwardly beveled sides 31, 31 and the cutting edges 32, 32 which latter preferably are flush with the outer surfaces of said disks 28, 28. From the points 30, 30 the disks 28, 28 along their peripheries increase in width from said points 30, 30 following the bevels 31, 31 until the main thickness of said disks 28, 28 is reached thereby affording fiat peripherally curved riding surfaces 33, 33 extending from the points 30, 30 of said cuttin'g implements to the heels or guards 34, 34. By reference to Fig. 4 it will be noticed that the heel or guard 34 of one such implement or element is so spaced from and related to the point 30 of the next succeeding cutting implement that clearances are provided between said points 30 and said heels 34 and that said heel 34 bears against the bobbin shaft B at about the same time that the point 30 of said next succeeding cutting implement is engaging the roving or Fig. 6, so that the points 30, 30 of one of said disks are staggered with relation to the points 30, 30 of another of said disks whereby, in the rotation of said disks, the points 30, 30 of the respective disks reach the position to act on roving or yarn at different times.

Belt or apron 12 is or may be unsupported along its upper reach between the pulleys 11, 11 except at or approximately at a point below the position of the yarn cutting device carried by shaft 25 and it is desirable that provision should be made to so arrange the means for supportin the belt or apron 12 at such point that said belt or apron may be deflected or depressed to permit the passage of the heads H of the bobbins beneath the disks 28, 28 without contact of said heads with said disks thereby preventing the scratching, cutting or other injury to said bobbin heads by the points 30, 30 of said disks 28, 28. The support of the belt or apron 12 just above referred to is provided by the roll 35 of the counterweighted lever 36 which is pivotally supported by the bracket 37 depending from the frame members 8, 8. The depression of belt or apron 12 against the supporting action of roll 35 preferably is effected by the inclined dropper plate 38 which is pivotally mounted between brackets 39, 39 of the frame members 8, 8 between which latter the free end of this plate 38 having the depending perforated cars 40, 40 is, at times, free to swing. Provision is made to lock said plate 38 against swinging by means of the converging arms 41, 41 secured to the inner sides of said frame members 8, 8 and having the pins 42, 42 adapted to engage in the perforations of ears 40, 40 of said plate 38. Normally plate 38 will be thus locked in the position shown in Fig. 5, so that the head H of a bobbin carried along by belt 12 will be guided downward by said plate 38 and will effect the depression or deflection of belt 12 against the sustaining action of roll 35, when however head H of said bobbin reaches a predeter mined point between the converging arms 41, 41, the further movement of the bobbin will cause its head H to exert a spreading action'on said arms 41, 41-- as a'result of which pins 42, 42 of said arms will be released from the perforated ears 40-, 40 of plate38 thus permitting the swinging of said plate and the raising of the belt 12 and the bobbin thereon through the action of roll 35 and its counterweighted lever 36.

The mechanism for efiecting the deflection ofbelt 12 by the passing of the head of the bobbin beneath the edge of plate 38 and the subsequent release of said plate 38 to permit the belt and the bobbin to be raised toward the stripping osition is similar to that described in our a ove named patent and has been satisfactory in use but in order to prevent the sudden upward movement of the bobbin we prefer to add to such mechanism the pair of curved guards or guides 43, 43 which are sustained by extensions 44, 44 of the sleeves 45, 45 slidable on the shaft 25 and having the slotted plates 46, 46 adapted to be secured in the adjusted positions by the screws 47, 47 secured in the members 8, 8. These curved guards or guides are preferably spaced apart approximately as shown 1n Figs. 3 and 6 to receive the head H of the bobbin and prevent said head from passing between said guards or guides to the cutting device but permitting the shank B of the bobbin with the tail end of roving thereon, because of its smaller diameter, to pass between said guards or guides 43, 43 and reach the position approximately shown inFig. 4.

It being understood that belt 12 and the bobbins thereon are traveling in the directlon indicated by the arrow of said belt in Fig. 5 and the cutter disks are rotating in the direction indicated by their arrows in said Fig. 5, it will be seen that when the bobbins are in the cutting position, Fig. 6. the points 30, 30 of the cutting devices of sa d disks 28, 28 may engage beneath the C01lS R of roving or yarn on the shafts B of the bobbins somewhat as shown in said Fig.

-6 and raise or stretch saidcoils until the edges 32 of the cutting devices sever said coils. Under the forward movement of the bobbins and the rotation of said disks all of the coils of roving may be severed and said coils may drop onto the belt 12 and ultimately fall or be deposited 011 the floor or in a suitable receptacle. The bobbins after the stripping or cutting operation, are

delivered between the rack bars 48, 48 spaced erated by belt 24. In bearings ofthe hood 49 is journaled the shaft -55 carrying the brush 56 which acts-to loosen and-remove fiufh lint or-yarn from thecutters ofdisks 28, 28. Exteriorly of'saidhood 49, shaft frictional contact with pulley 26 or in any other well'known manner.

In the modification shown in Fig. .7 shaft 25 is shown .as provided with three cutter 55 has the pulley 57- adapted to be rotated by i disks 58 and 59, 59 of which disk 58 is of less diameter than disks 59, 59. These disks 58 and 59, 59 may have peripheries substantially similar to the disks 28, 28 or the peripheries of disks 59, 59 may be beveled as shown in said Fig. 7. In all cases however the peripheries of these disks 58 and 59, 59 have pointed cutting devices 60, 60 which operate on the roving or yarn in the same manner as the cutting implements of said disks as. 28.

Having thus described our invention we claim as new and desire to secure by Letters Patent 1. A bobbin stripping machine comprising yielding means to feed forward bobbins, a yarn severing device operating above said feeding means, and fixed means to guard the head of a bobbin from contact with said severing device while permitting yarn severing cooperation between the shaft of said bobbin and said severing device.

A bobbin stripping machine comprising yielding means to feed forward bobbins, a yarn severing device operating above said feeding means, and a pair of fixed guards spaced apart to permit the passage there between of the shaft of a bobbin while preventing contact of said bobbin with said severing device.

3. A bobbin stripping machine comprising yielding means to feed forward bobbins, a yarn severing device operating above said feeding means, means to act on a bobbin on said feeding means to deflect said means away from said severing device to permit passage under said device of a bobbin head and means to limit upward movement 0 the bobbin head under lifting action of said feeding means.

4. A bobbin stripping means comprising yielding means to feed forward bobbins. a yarn severing device operating above said feeding means, and a pair of curved guards adjustable relative to such severing means and spaced apart to prevent passage therebetween of a bobbin head while permitting the passage of a bobbin shaft.

5. A bobbin stripping machine comprising a bobbin feeding belt mounted on pulleys, a counterweighted arm pivotally mounted in the machine and acting constantly to sustain a portion of said belt, a rotary yarn severin device mounted above suchsustained portlon of said belt, and a pair of curved guards located above said sustained portion of said belt and spaced apart to permit the passage therebetween of a bobbin shaft while preventing the passage of the bobbin head to said severing device.

6. A bobbin stripping machine comprising a rotary member having peripherally disposed means to take under and raise coils of roving on a bobbin to cutting position.

7. A bobbin stripping machine eomprising a rotary yarn severing device having a series of peripherally disposed yarn engaging elements having cutting edges and guards on the peripheries of said severing devices.

8. A bobbin stripping machine comprising a rotary yarn severing device having a series of peripherally disposed openings defined between peripheral guarding elements and cutting elements spaced from said guarding elements.

9. A bobbin stripping machine comprising a rotary disk having a cylindrical periphery furnished with a series of inwardly extending clearances, the walls of which have integral yarn engaging elements furnished with inclined cutting edges, the periphery of said disk between said clearances constituting guarding surfaces.

10. A bobbin stripping machine comprising a series of rotary disks spaced apart diametrically, each of said disks having a series of yarn cutting elements, and means adapted to press the shaft of a bobbin having yarn against the peripheries of said disks.

11. A bobbin stripping machine comprising a series of disks mounted to rotate on the same axis and spaced apart to partially receive yarn on a bobbin shaft, said disks having peripherally disposed clearances furnished with yarn severing elements, the clearances of said disks arranged in staggered relation, and means operative to feed forward bobbins to said disks and to press the shaft of a bobbin toward said disks.

12. A bobbin stripping machine comprising a rotary member having peripherally disposed cutting means and means to take under and raise coils of roving on a bobbin to cutting position, and means to guard the head of a bobbin from said cutting means.

JOHN D. SHARPLES. THOMAS GROWE.

Copies 01 this patent may be obtained for live cents each, by addressing the Commissioner of Patents, Washington, D. 0." 

